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Zenoah G20 EI

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Old 01-30-2013, 12:15 PM
  #1
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Default Zenoah G20 EI

Does anyone have experience with how big a model the Zenoah G20 Ei can haul through the sky? I'm contemplating putting one on a Hanger 9 PT-19 Arf that weighs approximately 13 to 16 pounds. Unsure about whether or not this power plant can cut the mustard. Any recommendations for the PT-19 would be appreciated.

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Old 01-30-2013, 12:52 PM
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Default RE: Zenoah G20 EI

I have the G-20 on my 1/4 scale Hangar 9 Cub and it flies great! (After changing to an RCExel ignition the original Zenoah ignition was/is junk) The plane has a 106" wingspan, but I don't know the exact weight, but Horizon Hobby's website list the flying weight as 14.5 to 16.5 lbs... I am using an APC 17x6 prop and recall getting about 8000 rpm...
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Old 01-30-2013, 02:06 PM
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Default RE: Zenoah G20 EI

Thanks for the update on your success with the Zenoah G20 Ei. I'm familiar with stories of the ignition unit being bad, but hadn't considered it before, I will now. Your Cub has 26 more inches of wingspan and therefore a lighter wing loading than the PT-19. I also have a G-26, but I'm afraid that this would make the plane a highly unrealistic rocket flyer. The PT-19 was a trainer and could accomplish mild aerobatics. I saw a Hanger 9 version with a G-23 in it and it more closely replicated the flight pattern of an ME-262. Thanks for the help and good luck flying your Cub.

Cheer,

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Old 01-30-2013, 03:29 PM
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Default RE: Zenoah G20 EI

Without looking up specs, I think you need to tell us what flying performance you are looking for.
Scale?
Mild aerobatics?
Sport?
3D?

Scale = 15 lbs
Mild = 12 lbs
sport = 10 lbs
3d = 8 lbs

Its performance is very comparible to an old school 120 four stroke.

I've got one on a H9 .60 Ultra Stick, more than 600 hours. biggest problem has been ground clearance for the 16 x 8 prop I run.
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Old 01-31-2013, 10:11 AM
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Default RE: Zenoah G20 EI

The PT-19, from Hanger 9 should come out between 13 and 16lbs in general terms. In flight performance I was hoping for mild aerobatics from the Zenaoh G20 Ei. I'm not sure that this engine is up to that, but may fly it scale alright. Problem is that these old thumbs will get bored and want just a little bit more, as always. In truth I was hoping that the engine would be comparable with a newer 1.20 four stroke.

Thanks for the help 7 Cheers,

Bob
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Old 01-31-2013, 11:17 AM
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Default RE: Zenoah G20 EI

I have a g-20 in a seagull 90 sized yak and it weights in the 10.5 pound range. Good aerobatics but it is not unlimited. If your plane comes in above 13 pounds it will fly it scale but will be marginal for aerobatics.
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Old 01-31-2013, 11:29 AM
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Default RE: Zenoah G20 EI

Do you have the specs on this plane?
How many square inches of wing?
The G20ei is 41 ozs and makes about 2 horses.
I'm spinning a Master Airscrew K series 16 x 8 (for ground strike surviablity) @ about 8200
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Old 01-31-2013, 03:24 PM
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Default RE: Zenoah G20 EI

As I recall the model is about 80+" wingspan with a bit over 1,000 sq. ins of wing area. Try to get the finished weight closer to 13 than 16 lbs and if propped correctly the G20 should fly it quite well but don't expect much more than a just above scale performance. A G26 up front would give it a very sprirtely performance.

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Old 01-31-2013, 03:51 PM
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Default RE: Zenoah G20 EI

Obviously the closer you can get it to 13 pounds the better is going to fly..... I think anything about that then the performance is going to really start to go down hill. By the way the ignition is not junk by any means...read up on Toni Clark's site and be enlightened! I run a 3cell 1600mah NiMH pack on mine and get all the time I need!

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Old 02-01-2013, 02:00 PM
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Default RE: Zenoah G20 EI

Hi Guys,

The Hanger Nine PT-19 has an 82' wingspan, can weigh from 13 to 16 Lbs, and has a total wing area of 1010 Sq. Inches. The Original assembly manual calls for a Zenoah G-23, which is no longer in production. I'll have to check the dimensions on a G-26 and see if the engines are comparable. My gut instinct is that the G-26 might be to much engine. Opinions please?

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